My younger hen acts like she has an egg in her box but there's nothing there. What could be the problem. I first felt under her and she gave me a light peck and let me move my hand further under her. There's nothing there. I picked her up with ruffled feathers and all and put her out with the others. She went and drank some water, ate, and pecked the yard with the others. I put her nesting box on top of the coop and went in the house for a few minutes, came back out and didn't see her. She was in the nesting box on top of the coop. What could be wrong? Is she trying to lay an egg and it's stuck or does she think there's a egg in her nesting box? This started two days ago.